Clogging up the ether with rubbish

Will there come a point of e-saturation? Here is an interesting article by Laura Miller about the rubbish piling up on the kindle store shelves.

It does pose an interesting question. If you have a shop full of what might be termed e-rubbish, does it make people turn to the likes of Waterstone's or The Book Depository to ensure some sort of e-quality control?

Might it be an opportunity for a proper e-book shop to carve out a niche where only quality-controlled e-books are stocked?